This vintage book contains Alexander D'Agapeyeff's famous 1939 work, "Codes and Ciphers - A History of Cryptography". Cryptography is the employment of codes and ciphers to protect secrets, and it has a long and interesting history. This fantastic volume offers a detailed history of cryptography from ancient times to modernity, written by the Russian-born English cryptographer, Alexander D'Agapeyeff. Contents include: "The beginnings of Cryptography", "From the Middle Ages Onwards", "Signals, Signs, and Secret Languages", "Commercial Codes", "Military Codes and Ciphers", "Types of Codes and Ciphers", "Methods of Deciphering", etcetera

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